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pH Buffers

PH buffers are aqueous solutions that maintain a constant pH when combined with small amounts of acids or bases, or when diluted. Buffer solutions usually consist of a combination of a conjugated base and a weak acid that absorbs excess hydrogen atoms to maintain a stable pH. Thus, buffer solutions are excellent for calibrating pH meters and determining the pH of a solution with low uncertainty. The Hach Lange range includes both colorless and color-coded solutions, in various types of packaging from 15 ml to 20 liters. PH buffers are also available in convenient single-use Singlet sachets and in sachets with powder for dilution. All buffer solutions are suitable for optimal calibration of pH electrodes with an accuracy of ± 0.02 pH at 25 °C.

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Application area

Appearance 1 Aquaculture 2 Beverages 14 Brewing 13 Chromatography 2 Dairy industry 7 Drinking water 45 Electroplating 1 Environmental monitoring 11 Equipment for water utilities 2 Food production 17 Industrial 2 Laboratory analysis 84 Meat production 2 Medicine 1 Oil and gas 2 Package control 1 Pharmaceuticals 9 Pools and spa 2 Process control 16 Reagents 7 Scales 1 Soil analysis 2 Test kits 2 Treatment facilities 11 Veterinary 2 Wastewater 43 Water filtration 1 Water supply 4 Wine production 2

Type

Conductivity Standard Solution 1 Laboratory 15 Powder pillows 11 Standard pH solutions 77 Standard solutions - one-parameter analysis 1

Industry

Pulp and paper 23 Power generation 30 Chemical 46 Municipal 67 Transport 23 Food and Beverage 72 Ecology 35 Glass 23 Pharmaceutical 38

Brand name

Hach 41 Hanna Instruments 18 Merck 13 Mettler Toledo 37 WTW 3

Parameters

Buffer capacity 1 Conductivity 2 pH 99

Measurement Range

1413 µS/cm 1 111800 мкСм/см 1 pH 1.09 1 pH 1.679 3 pH 2.0 1 pH 2.00 3 pH 4,00 2 pH 4,00 ± 0,02 1 pH 4,005 1 pH 4.006 1 pH 4.01 15 pH 4.01 / 7.00 / 9.21 2 pH 4.01 / 7.00 / 10.00 1 pH 4.01 / 7.00 / 10.01 2 pH 4.01 and 7.00 2 pH 4.010 1 pH 4.65 1 pH 5.00 1 pH 6,86 2 pH 6.865 2 pH 7,01 and10,01 1 pH 7.00 15 pH 7.00 and 10.01 1 pH 7.01 3 pH 7.010 1 pH 7.413 1 pH 8.00 1 pH 9.21 4 pH 9.23 1 pH 9.180 2 pH 10.00 2 pH 10.01 12 pH 10.010 1 pH 10.012 2 pH 11.00 2 pH 12.45 1 pH 12.454 1

Accuracy

±0,02 1

Operating temperature range

+15…+25 °C 1 от +0.24 (0 °C) до –0.21 (50 °C) 1 от +15 °C до +25 °C 1

Features

Калибровочный буфер pH 5, трассируемый по NIST/PTB 1 Температура хранения +15 °C до +25 °C 1

Number of tests

15 4 20 3 30 1 50 3 250 2

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SKU: 1.09433.1000